I used the Hagons and like them and saved quite a bit. I got them from Bella Course. Hagon makes them to order. You specify spring tension and dampening as well as length. If you lower 2" you will have to cut the chain guard or fender for clearance. Not sure about the air box but the tab above the chain for the tool box on the Freak bracket will need to be cut or bent to clear the chain.

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